package com.smart.community.property.controller;

import com.smart.community.commons.result.PageResult;
import com.smart.community.commons.result.Result;
import com.smart.community.property.service.IWaterFeeService;
import com.smart.community.property.vo.WaterFeeVO;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.Parameter;
import io.swagger.v3.oas.annotations.tags.Tag;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * 水费移动端控制器
 * 
 * 严格按照《Java后端SpringBoot代码开发规范.md》Controller规范实现：
 * - 功能单一原则：Controller类必须是单纯的请求处理类，功能必须单一
 * - 禁止业务逻辑：只包含请求处理逻辑，禁止添加业务逻辑
 * - 完整注释：所有方法都有完整的JavaDoc注释
 * - 统一异常处理：使用@ExceptionHandler统一处理异常
 * - 统一返回格式：使用Result统一返回格式
 * - 参数验证：使用@Valid注解验证参数
 * - 日志记录：记录关键操作日志
 * 
 * @author Wu.Liang
 * @since 2024-12-21
 * @version 1.0.0
 */
@Slf4j
@RestController
@RequestMapping("/property/water-fees")
@Tag(name = "水费管理", description = "水费账单查询、详情、缴费记录等接口")
public class WaterFeeMobileController {
    
    @Autowired
    private IWaterFeeService waterFeeService;
    
    /**
     * 查询当前用户的水费账单
     * 
     * App端专用：根据当前登录用户ID查询业主信息，获取关联的房户ID集合，查询相关水费账单
     * 
     * @param current 当前页
     * @param size 每页大小
     * @param paymentStatus 缴费状态
     * @param billingPeriod 计费周期
     * @return 分页查询结果
     * @throws Exception 统一异常
     */
    @GetMapping("/mobile/my-fees")
    @Operation(summary = "查询当前用户的水费账单", description = "App端专用：根据当前登录用户ID查询业主信息，获取关联的房户ID集合，查询相关水费账单")
    public Result<PageResult<WaterFeeVO>> getMyWaterFees(
            @Parameter(description = "当前页", example = "1") @RequestParam(defaultValue = "1") Integer current,
            @Parameter(description = "每页大小", example = "20") @RequestParam(defaultValue = "20") Integer size,
            @Parameter(description = "缴费状态：0-未缴费，1-已缴费，2-逾期，3-部分缴费") @RequestParam(required = false) Integer paymentStatus,
            @Parameter(description = "计费周期", example = "2024-01") @RequestParam(required = false) String billingPeriod) throws Exception {
        
        log.info("开始查询当前用户的水费账单，当前页: {}, 每页大小: {}, 缴费状态: {}, 计费周期: {}", 
                current, size, paymentStatus, billingPeriod);
        
        PageResult<WaterFeeVO> result = waterFeeService.getMyWaterFees(current, size, paymentStatus, billingPeriod);
        
        log.info("查询当前用户的水费账单成功，总记录数: {}, 当前页记录数: {}", 
                result.getTotal(), result.getRecords().size());
        
        return Result.success(result);
    }
    
    /**
     * 获取水费详情
     * 
     * App端专用：获取指定账单的详细信息，验证当前用户是否为该房户的业主
     * 
     * @param billId 账单ID
     * @return 账单详情
     * @throws Exception 统一异常
     */
    @GetMapping("/mobile/detail/{billId}")
    @Operation(summary = "获取水费详情", description = "App端专用：获取指定账单的详细信息，验证当前用户是否为该房户的业主")
    public Result<WaterFeeVO> getBillDetail(
            @Parameter(description = "账单ID", example = "1") @PathVariable Long billId) throws Exception {
        
        log.info("开始获取水费详情，账单ID: {}", billId);
        
        // TODO: 从当前登录用户上下文获取用户ID
        Long currentUserId = 1L; // 临时硬编码，实际应从SecurityContext获取
        
        WaterFeeVO result = waterFeeService.getWaterFeeDetailForMobile(billId, currentUserId);
        
        log.info("获取水费详情成功，账单ID: {}", billId);
        
        return Result.success(result);
    }
    
    /**
     * 获取缴费记录
     * 
     * App端专用：获取指定费用的缴费记录，验证当前用户是否为该房户的业主
     * 
     * @param feeId 费用ID
     * @return 缴费记录列表
     * @throws Exception 统一异常
     */
    @GetMapping("/mobile/payment-records")
    @Operation(summary = "获取缴费记录", description = "App端专用：获取指定费用的缴费记录，验证当前用户是否为该房户的业主")
    public Result<List<Map<String, Object>>> getPaymentRecords(
            @Parameter(description = "费用ID", example = "1") @RequestParam Long feeId) throws Exception {
        
        log.info("开始获取水费缴费记录，费用ID: {}", feeId);
        
        // TODO: 从当前登录用户上下文获取用户ID
        Long currentUserId = 1L; // 临时硬编码，实际应从SecurityContext获取
        
        // 验证用户权限
        waterFeeService.validateUserPermissionForFee(feeId, currentUserId);
        
        // TODO: 实现获取缴费记录的逻辑
        List<Map<String, Object>> records = new ArrayList<>();
        
        log.info("获取水费缴费记录成功，费用ID: {}, 记录数: {}", feeId, records.size());
        
        return Result.success(records);
    }
}
